ok heres what you have to do

ok so one will be in the igglue or hidde out just open it with your staff.the second one
is in the boarded up area and get on the sharp claw cannon and blast it.then go climb in
(used to be)boarded out area and to the left sholuld be a ledge climb up it and the cace
should be there.and the last one i kinda forgot...oh wait i think theres only two
but...let me know if i helped any!!!! ^-^